Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Narrative) (Details)

v2.4.0.6
Stock-Based Compensation (Narrative) (Details) (USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Share-based Compensation [Abstract]    
Granted, Shares 0 0
Stock-based compensation expense $ 1,500,000 $ 1,100,000
Capitalized stock-based compensation 601,000 454,000
Unrecognized compensation expense $ 11,600,000  
Weighted average period 1 year 8 months 9 days